'Canon bone' definitions:
Definition of 'Canon bone'
- Canon bone \Can"on bone`\ [F. canon, fr. L. canon a rule. See
canon.] (Anat.)
The shank bone, or great bone above the fetlock, in the fore
and hind legs of the horse and allied animals, corresponding
to the middle metacarpal or metatarsal bone of most mammals.
See Horse.
[1913 Webster]